Urban outfitters studs earring set

Urban outfitters stud earring set. The earrings that are missing are the only ones I wore, the ones in this listing have never been worn. This posting is for the 4 pairs of earrings shown. HOWEVER, one of the gold teardrops is missing a back (see photos). I don’t know what metal these are and cannot vouch for hypoallergenic qualities. Please send offers!!